64328481 has 12 divisors (see below), whose sum is σ = 106193152. Its totient is φ = 36759096.

The previous prime is 64328479. The next prime is 64328489. The reversal of 64328481 is 18482346.

64328481 is a `hidden beast` number, since 643 + 2 + 8 + 4 + 8 + 1 = 666.

64328481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64328481 - 2¹ = 64328479 is a prime.

It is a super-2 number, since 2×64328481² = 8276306935534722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64328489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510481 + ... + 510606.

Almost surely, 2^64328481 is an apocalyptic number.

It is an amenable number.

64328481 is a deficient number, since it is larger than the sum of its proper divisors (41864671).

64328481 is a wasteful number, since it uses less digits than its factorization.

64328481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021100 (or 1021097 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 64328481 is about 8020.5037871695. The cubic root of 64328481 is about 400.6831679563.

The spelling of 64328481 in words is "sixty-four million, three hundred twenty-eight thousand, four hundred eighty-one".